CRE 101 · deweyluong.realtor

Industrial and Warehouse Real Estate Explained: Clear Height, Dock Doors, and the Specs That Decide Value in Georgia

Two warehouses with the same square footage on the same street can be worth very different money — because in industrial real estate you are not buying floor area, you are buying usable capacity. By Túy “Dewey” Luong, CCIM — Founding Broker, SERHANT. Atlanta · 318 closed sales / $281.2M career volume · 678-707-2498

Industrial property — warehouses, distribution buildings, light manufacturing, and flex space — is often the first large space a growing business meets after a retail shop: storage for a store, a food-production facility, a distribution point for imported goods. Unlike retail, a warehouse's value sits almost entirely in its technical specifications: clear height, dock doors, truck court, column spacing, power, and sprinkler capacity. This page walks through the four industrial types, the specs in the order a buyer or tenant should check them, a full worked income example, and the Georgia-specific points that change the answer. The worked example uses made-up, rounded numbers to teach the mechanics. This page is general education, not investment advice — verify every spec on the technical documents and in person before signing anything.

The four industrial types

• Warehouse / distribution: storing and moving goods — regional distribution centers, fulfillment, importer warehouses. Tall ceilings, many dock doors, deep truck courts.
• Manufacturing: production space with heavy power, sometimes cranes and heavy floor loads. Heavy manufacturing is less common in Gwinnett than warehouse and light production.
• Flex space: finished office or showroom in front, warehouse behind, usually in smaller bays of about 3,000–10,000 SF in industrial parks. Often the best fit for a small or mid-size business that needs office and storage at one address.
• Industrial outdoor storage (IOS): fenced land for trucks, containers, and equipment. In demand, but tightly limited by zoning — not every industrial parcel may store goods outdoors.

The same word "warehouse" can describe four different assets with four different tenant pools. Identifying the type correctly is step one of any valuation.

Clear height — the most money-bearing spec in the building

• Older Gwinnett-area warehouses built in the 1980s–1990s often clear only 16–20 feet.
• Modern distribution space commonly clears 28–36 feet; new small-bay product commonly 24–28 feet.
• Flex space is usually the lowest, roughly 14–18 feet.

Why it turns into money: goods stack vertically. A 24-foot-clear building allows practical pallet stacking to about 20 feet; an 18-foot-clear building to about 14 feet. On the same floor area the taller building holds roughly 20 ÷ 14 ≈ 1.4 times the goods. Compare industrial rent on usable capacity, not just floor square feet — a building 15% cheaper per floor SF but 30% lower in real capacity costs more for the same stored product.

Doors: dock-high, drive-in, and the door-to-area ratio

• Dock-high doors sit about 4 feet up, level with a trailer bed, usually with a dock leveler so a forklift drives straight into the trailer. This is the door for palletized freight and 53-foot trailers.
• Drive-in / grade-level doors are roll-up doors at ground level — vehicles, forklifts, and equipment drive straight in. Right for smaller trucks, service vehicles, and equipment.
• The ratio: a common distribution rule of thumb is about 1 dock per 10,000 SF. A 20,000 SF building with one dock and no drive-in door has a seriously narrowed tenant pool, whatever its area and price.
• Truck court: the paved area in front of the docks where trucks maneuver and wait. A 53-foot trailer needs roughly 120–130 feet of court depth from the dock face; a shallower court means large trucks cannot use the building even if the doors are right.
• Trailer parking and yard: dedicated trailer stalls and fenced yard command a premium in a market short on parking.

On a tour, count the doors, measure the court, and ask about dock equipment — levelers, seals, restraints. Replacing dock equipment is not cheap, and its condition is a negotiation item.

The remaining specs: columns, slab, power, sprinklers, office share

• Column spacing: modern warehouses commonly run 50 × 50 feet or wider; older 30 × 30 grids are far tighter for racking and forklifts. Dense columns mean less effectively usable area.
• Slab: thickness and floor load decide whether heavy forklifts and tall racking work; a cracked or settled slab is a major repair bill.
• Power: light manufacturing and cold storage need large 3-phase service (for example 2,000 amps). A utility upgrade can take many months — missing power is really missing, not quickly fixable.
• Sprinklers / ESFR: high-pile storage commonly requires an ESFR system. A building with standard sprinklers only can be rejected by insurers and larger tenants, or carry the upgrade cost into its price.
• Office share: pure distribution is often only 3–5% office; flex can run 20–30%. Built office inside a warehouse rents for less than separate office space — but paying rent on office you do not use is a monthly waste.
• Parking and flow: employee cars should be separated from truck flow; parks that mix the two get marked down by tenants.

Worked example. The numbers below are made up and rounded to teach the mechanics. This is not a real property.

• A 20,000 SF small-bay warehouse in Gwinnett, 24 feet clear, 2 dock-high doors and 1 drive-in door, asking $2,200,000 — $110 per SF.
• Market rent: $8.00/SF/year on an NNN structure → gross potential rent 20,000 × $8.00 = $160,000 a year.
• Less 5% vacancy: −$8,000 → effective gross income (EGI) $152,000.
• Owner costs not recovered (management, reserves, vacancy-period costs), assumed at $12,000 → NOI = $140,000.
• Cap rate at the ask: $140,000 ÷ $2,200,000 ≈ 6.4% (see Cap Rate and NOI).
• The DSCR cross-check: a 65% loan is $1,430,000; at terms producing about $110,000 a year of debt service, DSCR = $140,000 ÷ $110,000 ≈ 1.27x — just over the 1.25x floor many lenders use, meaning the ask sits near the ceiling the loan math funds; a higher price comes out of the buyer's cash, not a larger loan.

The lesson: with industrial, the cap rate is only half the story. The example building "makes its numbers" because its specs support the $8.00/SF rent — at 16 feet clear, the same building's real market rent could be materially lower, and every number behind it falls with it.

Georgia and Gwinnett specifics a warehouse buyer needs

• Location is a freight corridor: Gwinnett warehouse value ties to access to I-85, I-985, and GA-316. A good building whose trucks must cross residential streets to reach an interstate gets cut by larger tenants at the first screen.
• Zoning must match the exact use: distinguish M-1 (light industrial) from M-2 (heavy industrial) and their conditions; outdoor storage, vehicle repair, and food processing can each need separate permission. Get zoning confirmed in writing by the county before earnest money goes hard — never on the seller's word (see Due Diligence).
• Environmental (Phase I): industrial land with a history of gas stations, auto repair, dry cleaning, or metal plating is the highest contamination-risk group. A Phase I Environmental Site Assessment is close to mandatory in industrial due diligence — skipping it means accepting cleanup risk as your own.
• Taxes after purchase: the county can reassess after a sale, so the next year's tax bill can exceed the seller's figure in the offering. Underwrite NOI on post-purchase taxes, and remember the 45-day appeal window in Property Tax Appeals.
• Industrial tenants sign longer and demand less day to day — but when they leave, downtime and re-tenanting TI are both larger than for a small retail bay. Cash reserves have to plan for that.

Four mistakes first-time warehouse buyers and tenants make

• Comparing price per floor SF while ignoring clear height — usable capacity is what you are actually paying for.
• Counting area without counting doors and court — a missing dock or a shallow truck court is a defect money cannot reasonably fix; land does not expand.
• Skipping sprinklers and power — both upgrades are expensive and slow, and both usually surface only when a tenant or insurer demands them.
• Valuing on the rent of a different-spec building — pricing an 18-foot building off 32-foot rents is paying the seller for height the building does not have.

Cho nhà đầu tư và chủ doanh nghiệp người Việt

Bất động sản công nghiệp — kho bãi, trung tâm phân phối, nhà xưởng sản xuất nhẹ và flex space — là phân khúc nhiều doanh nghiệp người Việt ở Gwinnett gặp đầu tiên khi cần mặt bằng lớn hơn một shop trong trung tâm mua sắm. Khác với mặt bằng bán lẻ, giá trị của một tòa kho nằm gần như hoàn toàn ở các thông số kỹ thuật: chiều cao thông thủy (clear height), cửa xuất nhập hàng, sân xe tải, khoảng cách cột, điện và hệ thống phòng cháy. Hai tòa nhà cùng diện tích, cùng khu vực, có thể chênh nhau rất xa về giá thuê chỉ vì một tòa xếp được hàng cao hơn tòa kia vài feet.

Trong ví dụ trên trang này: kho bay nhỏ 20.000 SF ở Gwinnett, clear 24 feet, 2 dock-high và 1 drive-in, chào giá $2.200.000 ($110/SF). Thuê thị trường $8,00/SF/năm theo cấu trúc NNN cho thu nhập tiềm năng $160.000; trừ trống phòng 5% còn EGI $152.000; trừ $12.000 chi phí chủ nhà không thu hồi được, NOI là $140.000 — cap rate khoảng 6,4% ở giá chào. Kiểm tra chéo DSCR: vay 65% ($1.430.000) với nợ phải trả khoảng $110.000/năm cho DSCR khoảng 1,27x, vừa qua ngưỡng 1,25x phổ biến của lender. Bản tiếng Việt đầy đủ của chủ đề này có trên NhaDat Duluth: Kho xưởng công nghiệp (industrial) là gì? Các thông số quyết định giá trị khi mua hoặc thuê kho ở Georgia Đây là thông tin giáo dục chung, không phải tư vấn đầu tư.

Frequently asked questions

What is clear height, and why does it decide what a warehouse is worth?

Clear height is the usable vertical space from the floor to the lowest overhead obstruction — beam, truss, light, or sprinkler line. It decides how high inventory can actually be stacked or racked. A building with 24 feet clear allows practical stacking to about 20 feet; an 18-foot-clear building allows about 14 feet. On the same floor area, the taller building holds roughly 20 divided by 14, about 1.4 times, the goods. That is why rent per square foot cannot be compared on floor area alone: a building 15% cheaper per floor square foot but 30% lower in usable capacity is more expensive for the same amount of stored product.

How many dock doors does a warehouse need?

A common rule of thumb for distribution space is about one dock per 10,000 square feet. A 20,000 SF building with only one dock-high door and no drive-in door is functionally limited no matter how good its price and floor area look — the tenant pool narrows sharply. Also check the truck court: a 53-foot trailer needs roughly 120 to 130 feet of court depth measured from the dock face to maneuver and wait. Doors without court depth do not work for large trailers.

What is the difference between flex space and a pure warehouse?

Flex space combines finished office or showroom in front with warehouse behind it in the same building, usually in smaller bays of roughly 3,000 to 10,000 SF inside managed industrial parks, with a higher office share (often 20-30%). A pure distribution warehouse is mostly open storage and movement space with only about 3-5% office. For a small or mid-size business that needs customer-facing office plus storage at one address, flex is usually the fit. For an operation that mainly receives, stores, and ships by large truck, a warehouse with proper docks and truck court wins even if it sits farther out along the I-85 corridor.

What should an owner-user check first before buying a warehouse in Georgia?

Three things, in order. First, zoning in writing from the county: does the zoning (for example M-1 light industrial vs M-2 heavy industrial, plus any conditions) actually permit your exact use at that exact parcel — outdoor storage, vehicle repair, and food processing can each need separate permission. Second, the physical specs: clear height, doors, power, and sprinkler/ESFR capacity against your current operation and your five-year expansion plan — power and sprinkler upgrades are both expensive and slow. Third, the full occupancy math: debt service, post-sale property taxes (the county can reassess after a sale), insurance, and maintenance versus continuing to lease — for an operating business buying its own building, an SBA 504 loan is one comparison worth running.

Kho xưởng công nghiệp ở Georgia: người mua người Việt cần kiểm tra thông số nào trước?

Bốn nhóm thông số quyết định giá trị: (1) clear height — chiều cao thông thủy quyết định xếp hàng cao bao nhiêu; tòa 24 feet xếp thực tế khoảng 20 feet, tòa 18 feet chỉ khoảng 14 feet, cùng diện tích sàn tòa cao hơn chứa được khoảng 1,4 lần hàng. (2) Cửa và sân: dock-high cho xe 53 feet, drive-in cho xe nhỏ, quy tắc khoảng 1 dock mỗi 10.000 SF, sân xe tải sâu 120-130 feet. (3) Cột, sàn, điện 3-phase và sprinkler/ESFR — thiếu điện hoặc thiếu ESFR vừa đắt vừa chậm khi nâng cấp. (4) Zoning bằng văn bản và Phase I môi trường với đất công nghiệp. Trong ví dụ trên trang này: kho bay nhỏ 20.000 SF ở Gwinnett chào $2.200.000 ($110/SF), thuê thị trường $8,00/SF NNN cho NOI $140.000, cap rate khoảng 6,4%, DSCR kiểm tra chéo 1,27x. Bản tiếng Việt đầy đủ của chủ đề này có trên NhaDat Duluth: bài 'Kho xưởng công nghiệp (industrial) là gì?'. Đây là thông tin giáo dục chung, không phải tư vấn đầu tư.

This page is general education, not investment, legal, tax or financial advice. Every figure in the worked example is made up and rounded to teach the mechanics; rent, cap rate, and loan figures shown are illustrative assumptions, not market quotes for any specific property. Túy “Dewey” Luong, CCIM — Founding Broker, SERHANT. Atlanta · 678-707-2498 · dewey.luong@serhant.com